feat!: improve pyproject deps metatable

[CoderJoshDK]

Summary

Closes #1461
Closes #1454

Warning

This PR is technically a breaking change

The docs extra should never be consumed by end users. However, technically, this would break anyone who did do that. Don't know why they would. But it could be the case.

• Moved docs group into dev dependency (update nox & readthedocs)
• Used an extra in the extra (aiohttp[speedups])
• Simplified doc group by including changelog group

Checklist

• If code changes were made, then they have been tested
  • I have updated the documentation to reflect the changes
  • I have formatted the code properly by running uv run nox -s lint
  • I have type-checked the code by running uv run nox -s pyright
• This PR fixes an issue
• This PR adds something new (e.g. new method or parameters)
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, ...)

[read-the-docs-community]

Documentation build overview

📚 disnake | 🛠️ Build #30026616 | 📁 Comparing a71c0bd against latest (7c3b4f0)

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Show files changed (48 files in total): 📝 48 modified | ➕ 0 added | ➖ 0 deleted

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index.html	📝 modified
whats_new.html	📝 modified
api/abc.html	📝 modified
api/activities.html	📝 modified
api/app_commands.html	📝 modified
api/app_info.html	📝 modified
api/audit_logs.html	📝 modified
api/automod.html	📝 modified
api/channels.html	📝 modified
api/clients.html	📝 modified
api/components.html	📝 modified
api/emoji.html	📝 modified
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api/guild_scheduled_events.html	📝 modified
api/guilds.html	📝 modified
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[onerandomusername]

This is in both groups because our tests use features from typing-extensions 4.6 or greater, while the main library only requires typing-extensions 4.1

[CoderJoshDK]

Should you not just bump up the minimum version of typing-extensions, then? I need to go through the changelog a bit more. But it might even be valid to go all the way up to 4.14.0. It would drop support for 3.8. And opens up the ability to consume 3.14 syntax.
That minimum version spec testing would be helpful here for validation... but either way, I see no reason to not raise the minimum. If you expect it to be required anyway for the types of things you do in the tests, it seems reasonable to expect that the end user will also need a compatible version (I should check the tests code though ...)

[onerandomusername]

That's fair. If we implement typing extensions get type hints (which we probably should) this becomes moot as we'll need to bump the minimum version a bit.

[onerandomusername]

Iirc the reason we didn't do this previously is SOMETHING breaks on this. It might be a bug in a different consumer but I need to check poetry. PDM, and so forth that they can correctly manage disnake as a dependency when this is done.